Overview - Crankcase Ventilation

WARNING: This page is about a different car, the 2022 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Crankcase Ventilation

Courtesy of AUDI OF AMERICA, LLC

Cylinder Head Cover
Seal
- Always replace after removing.
Hose
- To the EVAP Canister Purge Regulator Valve 1 -N80-
Oil Separator
- Removing and installing. Refer to OIL SEPARATOR, REMOVING AND INSTALLING .
Seal
- Always replace after removing.
Hose
- For the crankcase ventilation
- To the turbocharger
- There are different versions. Refer to the Parts Information for the allocation.
Bolt
- 4 Nm
- Thread cutting
- Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the specification.
Seal
- Always replace after removing.
Bolt
- Tightening Specifications and Sequence
  - Refer to Fig 2.
- Thread cutting
- Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the specification.

Oil Separator - Tightening Specifications and Sequence

Fig 2: Oil Separator - Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts to 9 Nm in the following sequence: -1 to 7-.